640859040

素因数分解:

$2^5\times 3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:394

約数の個数: 288

約数和(自身を含む): 2318150016

約数和(自身を除く): 1677290976

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 53, 54, 60, 72, 80, 81, 90, 96, 106, 108, 120, 135, 144, 159, 160, 162, 180, 212, 216, 240, 243, 265, 270, 288, 311, 318, 324, 360, 405, 424, 432, 477, 480, 486, 530, 540, 622, 636, 648, 720, 795, 810, 848, 864, 933, 954, 972, 1060, 1080, 1215, 1244, 1272, 1296, 1431, 1440, 1555, 1590, 1620, 1696, 1866, 1908, 1944, 2120, 2160, 2385, 2430, 2488, 2544, 2592, 2799, 2862, 3110, 3180, 3240, 3732, 3816, 3888, 4240, 4293, 4320, 4665, 4770, 4860, 4976, 5088, 5598, 5724, 6220, 6360, 6480, 7155, 7464, 7632, 7776, 8397, 8480, 8586, 9330, 9540, 9720, 9952, 11196, 11448, 12440, 12720, 12879, 12960, 13995, 14310, 14928, 15264, 16483, 16794, 17172, 18660, 19080, 19440, 21465, 22392, 22896, 24880, 25191, 25440, 25758, 27990, 28620, 29856, 32966, 33588, 34344, 37320, 38160, 38880, 41985, 42930, 44784, 45792, 49449, 49760, 50382, 51516, 55980, 57240, 64395, 65932, 67176, 68688, 74640, 75573, 76320, 82415, 83970, 85860, 89568, 98898, 100764, 103032, 111960, 114480, 125955, 128790, 131864, 134352, 137376, 148347, 149280, 151146, 164830, 167940, 171720, 197796, 201528, 206064, 223920, 228960, 247245, 251910, 257580, 263728, 268704, 296694, 302292, 329660, 335880, 343440, 377865, 395592, 403056, 412128, 445041, 447840, 494490, 503820, 515160, 527456, 593388, 604584, 659320, 671760, 686880, 741735, 755730, 791184, 806112, 890082, 988980, 1007640, 1030320, 1186776, 1209168, 1318640, 1335123, 1343520, 1483470, 1511460, 1582368, 1780164, 1977960, 2015280, 2060640, 2225205, 2373552, 2418336, 2637280, 2670246, 2966940, 3022920, 3560328, 3955920, 4005369, 4030560, 4450410, 4747104, 5340492, 5933880, 6045840, 6675615, 7120656, 7911840, 8010738, 8900820, 10680984, 11867760, 12091680, 13351230, 14241312, 16021476, 17801640, 20026845, 21361968, 23735520, 26702460, 32042952, 35603280, 40053690, 42723936, 53404920, 64085904, 71206560, 80107380, 106809840, 128171808, 160214760, 213619680, 320429520, 640859040]

約数ペア:

[(1, 640859040), (2, 320429520), (3, 213619680), (4, 160214760), (5, 128171808), (6, 106809840), (8, 80107380), (9, 71206560), (10, 64085904), (12, 53404920), (15, 42723936), (16, 40053690), (18, 35603280), (20, 32042952), (24, 26702460), (27, 23735520), (30, 21361968), (32, 20026845), (36, 17801640), (40, 16021476), (45, 14241312), (48, 13351230), (53, 12091680), (54, 11867760), (60, 10680984), (72, 8900820), (80, 8010738), (81, 7911840), (90, 7120656), (96, 6675615), (106, 6045840), (108, 5933880), (120, 5340492), (135, 4747104), (144, 4450410), (159, 4030560), (160, 4005369), (162, 3955920), (180, 3560328), (212, 3022920), (216, 2966940), (240, 2670246), (243, 2637280), (265, 2418336), (270, 2373552), (288, 2225205), (311, 2060640), (318, 2015280), (324, 1977960), (360, 1780164), (405, 1582368), (424, 1511460), (432, 1483470), (477, 1343520), (480, 1335123), (486, 1318640), (530, 1209168), (540, 1186776), (622, 1030320), (636, 1007640), (648, 988980), (720, 890082), (795, 806112), (810, 791184), (848, 755730), (864, 741735), (933, 686880), (954, 671760), (972, 659320), (1060, 604584), (1080, 593388), (1215, 527456), (1244, 515160), (1272, 503820), (1296, 494490), (1431, 447840), (1440, 445041), (1555, 412128), (1590, 403056), (1620, 395592), (1696, 377865), (1866, 343440), (1908, 335880), (1944, 329660), (2120, 302292), (2160, 296694), (2385, 268704), (2430, 263728), (2488, 257580), (2544, 251910), (2592, 247245), (2799, 228960), (2862, 223920), (3110, 206064), (3180, 201528), (3240, 197796), (3732, 171720), (3816, 167940), (3888, 164830), (4240, 151146), (4293, 149280), (4320, 148347), (4665, 137376), (4770, 134352), (4860, 131864), (4976, 128790), (5088, 125955), (5598, 114480), (5724, 111960), (6220, 103032), (6360, 100764), (6480, 98898), (7155, 89568), (7464, 85860), (7632, 83970), (7776, 82415), (8397, 76320), (8480, 75573), (8586, 74640), (9330, 68688), (9540, 67176), (9720, 65932), (9952, 64395), (11196, 57240), (11448, 55980), (12440, 51516), (12720, 50382), (12879, 49760), (12960, 49449), (13995, 45792), (14310, 44784), (14928, 42930), (15264, 41985), (16483, 38880), (16794, 38160), (17172, 37320), (18660, 34344), (19080, 33588), (19440, 32966), (21465, 29856), (22392, 28620), (22896, 27990), (24880, 25758), (25191, 25440)]